JSON to Query String
Flatten a flat JSON object into a URL query string. Local, free, no signup.
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Flatten a flat JSON object into a URL query string. Local, free, no signup.
How to use JSON to Query String
- Paste or type your contentThe result appears as you type — there is no submit button.
- Read and copy the resultThe output updates live and the copy button takes it in one click.
Worked example
- {"q":"hello world","page":2}
- q=hello+world&page=2
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
JSON to Query String only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- What input works best?
- A flat object of simple key-value pairs.
- Are values encoded?
- Yes, values are URL-encoded so they are safe to append.